public notice 2019 annual water quality report · 2020. 6. 10. · water act regulations, the...

In accordance with Title Three of Article Eleven of the New York State Public Health Law and the 1996 United States Environmental Protection Agency (USEPA) Safe Drinking Water Act regulations, the following is the 2019 Annual Water Quality Report of the Locust Valley Water District. Established in 1922, the Locust Valley Water District, with over 2,523 residential and commercial service connections, supplies a population of approximately 7,500 through 60 miles of interconnected pipeline. The District serves Locust Valley, Lattingtown and sections of Mill Neck, Matinecock and Glen Cove. As defined by the United States Geological Survey (USGS), the District’s water source is groundwater from the Lloyd, North Shore and Upper Glacier Aquifers in the Locust Valley, Lattingtown and Matinecock area. With a total pumping capacity of 10.2 million gallons per day, six wells, located on six separate well fields, and two 1-million-gallon storage tanks adequately supply consumer and fire fighting demands. In 2019, Well #8, located on Duck Pond Road in Matinecock, was limited in use as perchlorate, an unregulat-ed contaminant, remained above an action level set by the New York State Department of Health (NYSDOH). Having completed an extensive screen and casing rehabilitation, Well #5 on Buckram Road in Locust Valley was returned to service at full capacity.

With wet weather conditions prevalent throughout the year, annual consumption was below average with 629.458 million gallons of water withdrawn from the aquifers. The District’s average demand was 1.725 million gallons per day with a peak demand of 5.202 million gallons per day on July 16, 2019. Consumer meters registered 90.9 percent of the water demand. The remaining 9.1 percent is attributed to unac-countable demands such as water main and service leaks, water main and hydrant flushing, well construction, fire fighting and training, road maintenance and aging water meters. On average, consumers this year paid a total of $680 for water, excluding taxes. The District routinely monitors the drinking water quality to insure its safety. No distribution samples exceeded the maximum contaminant levels as set by the NYSDOH. The District monitors more frequently than required by State standards to insure the quality of the community’s drinking water supply. Tests were performed for coliform bacteria, inorganic compounds, nitrates/nitrites, perchlorate, volatile organic compounds, trihalomethanes, haloacetic acids, radiological levels, synthetic organic compounds, as well as unregulated chemicals. The constituents that were found are listed in the Table of Detected Parameters. It is for this reason that the District and Nassau County Department of Health (NCDOH) do not recommend the use of unregulated private wells for domestic consumption. Drinking water, including bottled water, may reasonably be expected to contain at least a small amount of some con-taminants. The presence of contaminants does not neces-sarily indicate that the water poses a health risk. More information about contaminants and potential health effects can be obtained by calling the USEPA’s Safe Drinking Water Hotline at 1-800-426-4791 or by looking online at www.epa.gov/safewater or www.health.state.ny.us. The sources of drinking water (both tap water and bottled water) include rivers, lakes, streams, ponds, reservoirs, springs and wells. As water travels over the surface of the land and through the ground, it dissolves naturally occurring minerals and, in some cases, radioactive material, and can pick up substances resulting from the presence of animals or human activities. Contaminants that may be present in source water include: microbial contaminants; inorganic

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2019 ANNUAL WATER QUALITY REPORT Locust Valley Water District

226 Buckram Road, Locust Valley Public Water Supply Identification No: 2902833

~ P U B L I C N O T I C E ~

TYPICAL LONG ISLAND HYDROGEOLOGICAL CROSS SECTION

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LOCUST VALLEY WATER DISTRICT

2019 WATER QUALITY REPORT - TABLE OF DETECTED PARAMETERS

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Parameters or Contaminants

Violation (Yes/No)

Date of Sample

Level Detected (Range)

Unit Measurement MCLG

Regulatory Limit (MCL, AL or HA) Likely Source of Contaminant

(1) – During 2017 we collected and analyzed 20 samples for lead and copper. The 90% percentile level is presented in the table. The values reported for lead and copper represents the 90th percentile. A percentile is a value on a scale of 100 that indicates the percent of a distribution that is equal to or below it. The 90th percentile is equal to or greater than 90% of the lead and copper values detected in our water system. The action levels for both lead and copper were not exceeded at any site tested. Resampling is scheduled for 2020.

(2) – No MCL has been established for sodium. However, 20 mg/l is a recommended guideline for people on high restricted sodium diets and 270 mg/l for those on moderately sodium diets.

(3) – If iron and manganese are present, the total concentration of both should not exceed 500 ug/l. (4) – Perchlorate is an unregulated contaminant, however, the New York State Dept. of Health has

established an action level of 18 ug/l. (5) – MCL for Radium is for Radium 226 and Radium 228 combined. (6) – UCMR - Unregulated Contaminant Monitoring Rule is a Federal water quality sampling

program where water suppliers sample and test their source water for 1 year (2014). Results will be used by the USEPA to determine if the contaminants need to be regulated in the future. The district conducted follow up sampling in 2019 and the results of the recent sampling are shown if greater than the 2014 testing.

(7) – 1,4-Dioxane -The New York State (NYS) proposed MCL for 1,4 dioxane is 1 part per billion( ppb).

(8) – It is used as a solvent for cellulose formulations, resins, oils, waxes and other organic substances. It is also used in wood pulping, textile processing, degreasing, in lacquers,paints, varnishes, and stains; and in paint and varnish removers.

(9) – MCL of 100 ug/l is for Total Chromium. There is no MCL for Hexavalent Chromium.

(10) – PFOA has been used to make carpets, leathers, textiles, fabrics for furniture, paper packaging, and other materials that are resistant to water, grease, or stains. It is also used in firefighting foams at airfields. Many of these uses have been phased out by its primary U.S. manufacturer; however, there are still some ongoing uses.

(11) – The US Environmental Protection Agency (EPA) has established a life time health advisory level (HAL) of 70 parts per trillion (ppt) for PFOA and PFOS combined. The New York State (NYS) proposed maximum contaminant level (MCL) is 10 ppt for PFOA and 10 ppt for PFOS is expected to be finalized in late 2020.

Inorganic Contaminants Copper No July 2017 ND - 0.26 mg/l 1.3 AL = 1.3 Corrosion of galvanized pipes; 0.1(1) erosion of natural deposits Lead No July 2017 ND - ND ug/l 0 AL = 15 Corrosion of household plumbing ND(1) systems; erosion of natural deposits Barium No 09/09/19 0.023 - 0.086 mg/l 2 MCL = 2.0 Naturally occurring Fluoride No 08/27/19 ND - 0.10 mg/l n/a MCL = 2.2 Naturally occurring Zinc No 09/09/19 ND - 0.039 mg/l n/a MCL = 5.0 Naturally occurring Sodium No 09/10/19 7.0 - 20.2 mg/l n/a No MCL(2) Naturally occurring Chloride No 08/27/19 8.0 - 80.7 mg/l n/a MCL = 250 Naturally occurring Iron No 12/23/19 ND - 250 ug/l n/a MCL = 300 Naturally occurring Manganese No 12/23/19 ND - 0.84 ug/l n/a MCL = 300(3) Naturally occurring Nitrate No 10/01/19 2.3 - 5.6 mg/l 10 MCL = 10 Runoff from fertilizer and leaching from septic tanks and sewage Total Alkalinity No 09/03/19 15.1 - 29.6 mg/l n/a No MCL Naturally occurring Total Dissolved Solids No 09/09/19 69.0 - 166.0 mg/l n/a No MCL Naturally occurring Sulfate No 09/09/19 ND - 34.2 mg/l n/a MCL = 250 Naturally occurring Calcium No 09/09/19 7.2 - 19.0 mg/l n/a No MCL Naturally occurring Nickel No 09/03/19 ND - 1.3 ug/l n/a MCL = 100 Naturally occurring Magnesium No 09/09/19 3.0 - 8.0 mg/l n/a No MCL Naturally occurring Perchlorate No 11/25/19 ND - 10.4 ug/l n/a AL = 18(4) Fertilizer, matches, road flares, and fireworks Radiological Gross Alpha No 09/11/17 0.135 - 0.903 pci/L n/a MCL = 15 Erosion of natural deposits Gross Beta No 09/05/17 0.7 - 2.21 pci/L n/a MCL = 50 Erosion of natural deposits Radium 226 & 228 Combined No 09/05/17 ND - 0.868 pci/L n/a MCL = 5(5) Erosion of natural deposits Uranium No 09/11/17 0.07 - 0.46 ug/l n/a MCL = 30 Erosion of natural deposits Volatile Organic Contaminants Tetrachloroethene No 05/08/19 ND - 4.4 ug/l 0 MCL = 5 Industrial discharge cis -1, 2-Dichloroethene No 03/05/19 ND - 3.4 ug/l 0 MCL = 5 Industrial discharge Trichloroethene No 05/08/19 ND - 0.8 ug/l 0 MCL = 5 Industrial discharge 1, 1-Dichloroethane No 05/08/19 ND - 0.59 ug/l 0 MCL = 5 Industrial discharge Unregulated Contaminant Monitoring Rule and Follow-Up Testing – (UCMR3)(6) 1,4-Dioxane No 04/05/19 ND - 0.33 ug/l n/a HA = 35 Industrial discharge(7)(8) Chromium No 03/17/14 ND - 1.5 ug/l n/a MCL = 100 Natural deposits Hexavelent Chromium No 09/03/19 0.46 - 1.8 ug/l n/a No MCL(9) Natural deposits Molybdenum No 03/17/14 ND - 2.0 ug/l n/a No MCL Naturally occurring Strontium No 03/17/14 24.7 - 95.7 ug/l n/a HA = 4000 Naturally occurring Chlorate No 03/17/14 ND - 24.0 ug/l n/a No MCL Industrial discharge Perfluorinated Chemicals(10) Perfluorononanoic Acid No 09/19/19 ND - 4.55 ng/l n/a MCL = 50,000 Industrial discharge Perfluorooctanoic Acid (PFOA) No 02/13/19 ND - 8.7 ng/l n/a HA = 70 ppt Industrial discharge(11)

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contaminants; pesticides and herbicides; organic chemical contaminants; and radioactive contaminants. To ensure that tap water is safe to drink, the State and the USEPA prescribe regulations that limit the amount of certain contaminants in water provided by public water systems. The State Health Department’s and the U.S. Food and Drug Administration’s regulations establish limits for contami-nants in bottled water which must provide the same protec-tion for public health. The NYSDOH source water assessment for this system, based on available information, evaluated possible and actual threats to the drinking water source. Source water assessments provide resource managers with information for protecting source waters into the future. The assess-ment includes a susceptibility rating based on the risk posed by each potential source of contamination and how rapidly contaminants can move through the subsurface to the wells. The susceptibility of a water supply well to conta-mination is dependent upon both the presence of potential sources of contamination within the well's contributing area and the likelihood that the contaminant can travel through the environment to reach the well. The susceptibility rating is an estimate of the potential for contamination of the source water. It does not mean that the water delivered to consumers is, or will become, contaminated. The District’s drinking water is derived from six (6) wells. The source water assessment has rated two (2) of the wells as having a very high susceptibility to industrial solvents and a high to very high susceptibility to nitrates, and one well having a high susceptibility to microbial contamination. The very high susceptibility to industrial solvents is due pri-marily to point sources of contamination related to trans-portation routes, industrial facilities and gas stations in the assessment area. The high susceptibility to nitrate and microbial contamination is attributable to unsewered high density residential land use and related activities in the assessment area, such as fertilizing lawns. A copy of the assessment, including a map of the assessment area, can be obtained by contacting the Water

District, as noted on page 4. The tables on page 2 are the analytical results of the distri-bution system samples required by the USEPA, NYSDOH and NCDOH from January 1, 2019 to December 31, 2019. The District also takes eight (8) bacteriological samples per month at designated points throughout the service area. A yearly supplement containing water quality data for the District’s six (6) wells is available at the District office, on the District website or can be mailed to consumers upon request. The District’s distribution water met all federal and state microbiological, chemical and radiological quality require-ments. As indicated through District monitoring and test-ing, some constituents have been detected. The USEPA and the NYSDOH have determined that your water is safe at these levels. During 2019, the District, using calcium hypochlorite, maintained a range of 0.5 to 0.8 parts per million (ppm) of chlorine throughout the distribution system. In accordance with State regulations, the minimum level is 0.2 ppm and the Maximum Residual Disinfection Level (mrdl), the level below which there are no known health effects, is 4.0 ppm. Maximum Residual Disinfection Level Goals (mrdlg) do not reflect the benefits of the use of disinfectants to control microbial contamination. To reduce the natural corrosiveness of the water found in this region, the District also added sodium hydroxide to the water to raise its pH before entering the distribution system. This treatment has allowed for the Lead and Copper testing program to be under reduced monitoring in accordance with federal and state requirements. The 2017 sampling yielded overall results below mandated action levels with 90th per-centile levels of <1.0 ug/l for lead and 0.1 mg/l for copper. If present, elevated lead levels can cause serious health problems, especially for pregnant women, infants, and young children. It is possible that lead levels at your home may be higher than at other homes in the community as a result of materials used in your home’s plumbing. The District is responsible for providing high quality drinking

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Definitions: Maximum Contaminant Level (MCL) - The highest level of a contaminant that is allowed in drinking water. MCLs are set as close to the MCLGs as feasible. Maximum Contaminant Level Goal (MCLG) - The level of a contaminant in drinking water below which there is no known or expected risk to health. MCLGs allow for a margin of safety. Action Level (AL) - The concentration of a contaminant which, if exceeded, triggers treatment or other requirements which a water system must follow. Health Advisory (HA) - An estimate of acceptable drinking water levels for a chemical substance based on health effects information; a health advisory is not a legally enforceable Federal standard, but serves as technical guidance to assist Federal, State and local officials. Nephelometric Turbidity Unit (NTU) - A measure of the clarity of water. Turbidity in excess of 5 NTU is just noticeable to the average person. Milligrams per liter (mg/l) - Corresponds to one part of liquid in one million parts of liquid (parts per million - ppm). Micrograms per liter (ug/l) - Corresponds to one part of liquid in one billion parts of liquid (parts per billion - ppb). Nanograms per liter (ng/l) - Corresponds to one part of liquid in one trillion parts of liquid (parts per trillion - ppt). Picocuries per liter (pCi/L) - a measure of radioactivity in water. Non-Detects (ND) - Laboratory analysis indicates that the constituent is not present.

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plantings and grasses. Other conservation measures include correcting leaking fixtures, installing water saving appliances and daily conscientious water use. For further conservation information, consumers can contact the Cornell Cooperative Extension at 1-516-433-7970 or www.cce.cornell.edu/nas-sau; the New York State Public Service Commission at 1-518-474-7080 or at www.askPSC.com; or the American Water Works Association at 1-800-926-7337 or www.awwa.org. The following tables are the 2020 rate structures of the Locust Valley Water District:

INSIDE DISTRICT (QUARTERLY)

0 – 25,000 . . . . . . . . .$2.30 / 1,000 GALLONS (minimum charge $23.00)

25,001 – 50,000 . . . . .$2.70 / 1,000 GALLONS

50,001 – 100,000 . . . .$3.10 / 1,000 GALLONS

OVER 100,001 . . . . . .$3.50 / 1,000 GALLONS

ANNUAL PROPERTY TAX RATE $22.01 / $100 OF ASSESSED VALUATION

OUTSIDE DISTRICT (QUARTERLY)

0 – 25,000 . . . . . . . . .$3.40 / 1,000 GALLONS (minimum charge $34.00)

25,001 – 50,000 . . . .$3.80 / 1,000 GALLONS 50,001 – 100,000 . . .$4.20 / 1,000 GALLONS OVER 100,000 . . . . . .$4.60 / 1,000 GALLONS

NO PROPERTY TAX ASSESSMENT The Board of Water Commissioners welcomes all con-sumers with ideas for improvement. Public meetings are held on the second and fourth Wednesday of the month at 5:30 p.m. in the District office at 226 Buckram Road, Locust Valley. For a copy of this report or further information about your drinking water supply system, please visit the District’s informational website at www.locustvalleywater.com. If there are any questions regarding the Annual Water Quality Report or Sample Supplement for 2019, please con-tact Superintendent Charles Savinetti at the District office at (516) 671-1783, Monday through Friday, 8 a.m. to 4:30 p.m.

water, but cannot control the variety of materials used in plumbing components. When your water has been sitting for several hours, you can minimize the potential for lead expo-sure by flushing your tap for a minimum of 30 seconds to 2 minutes before using water for drinking or cooking. If you are concerned about lead in your water, you may wish to have your water tested. Information on lead in drinking water, testing methods and steps you can take to minimize exposure is available from the Safe Drinking Water Hotline or at www.epa.gov/safewater/lead. Nitrate in drinking water at levels above 10 mg/l is a health risk for infants of less than six months of age. High nitrate levels in drinking water can cause blue baby syndrome. Nitrate levels may rise quickly for short periods of time because of rainfall or agricultural activity. If you are caring for an infant, you should ask for advice from your health care provider. Some people may be more vulnerable to disease-causing microorganisms or pathogens in drinking water than the general population. Immuno-compromised people such as those with cancer undergoing chemotherapy; those who have undergone organ transplants; people with HIV, AIDS or other immune system disorders; some elderly and infants can be particularly at risk for infections and should seek advice from their health care providers about their drinking water. EPA/CDC guidelines on appropriate means to lessen the risk of infection by Cryptosporidium, Giardia and other microbial pathogens are available from the Safe Drinking Water Hotline. For additional information please contact the NCDOH at (516) 227-9692 or at www.nassaucountyny.gov. In 2019, having bond authorization from the Town of Oyster Bay for infrastructure improvements, the District installed a computerized Supervisory Control and Data Acquisition, or SCADA, for well plant operations and moni-toring; began construction of a Granulated Activated Carbon, or GAC, filter at Well #6 on 10th Street for the removal of low level Principal Organic Compounds; returned Well #5, on Buckram Road, to full capacity; upgraded the emergency interconnections with the City of Glen Cove and Village of Bayville; and received a $1.98 million grant from New York State to install a resin filter at Well 8 on Duck Pond Road to remove perchlorate. Various hydrant and valve replacements were also completed throughout the District. To conserve the District’s water supply, lawn irrigation is restricted by Nassau County Conservation Ordinance 248-A-1987. Water for irrigation accounts for over 60 percent of the District’s annual production. Considerable cost savings are available if consumers adhere to good landscaping practices such as retrofitting Smart technology to existing irrigation systems, employing appropriate sloping and grading meth-ods to optimize natural runoff, and using drought resistant

Board of Water Commissioners Louis P. Savinetti Patricia Peterson Peter G. Brown

2019 WATER QUALITY DATA

MAX.

CONT. DETECT. MAX. AVG. MAX. AVG. MAX. AVG. MAX. AVG. MAX. AVG. MAX. AVG.

PARAMETERS (mg/l) LEVEL LIMITS RESULT RESULT RESULT RESULT RESULT RESULT RESULT RESULT RESULT RESULT RESULT RESULT

(raw/treated) (raw/treated) (raw/treated) (raw/treated)

INORGANIC

ARSENIC 10.0 ug/l 3.0 ug/l ND ND ND ND ND ND ND ND ND ND ND ND

BARIUM 2.0 mg/l 0.2 mg/l 0.033 0.033 0.074 0.074 0.019 0.019 0.023 0.023 0.027 0.027 0.086 0.086

CADMIUM 5.0 ug/l 5.0 ug/l ND ND ND ND ND ND ND ND ND ND ND ND

CHROMIUM 0.10 mg/l 0.01 mg/l ND ND ND ND ND ND ND ND ND ND ND ND

COPPER [1.3] mg/l 0.02 mg/l ND ND 0.0034 0.0034 0.028 0.028 0.0041 0.0041 0.0053 0.0053 0.0097 0.0097

FLUORIDE 2.2 mg/l 0.1 mg/l ND ND ND ND ND ND ND ND 0.1 0.1 ND ND

LEAD [15.0] ug/l 1.0 ug/l ND ND ND ND ND ND ND ND ND ND ND ND

MERCURY 2.0 ug/l 0.2 ug/l ND ND ND ND ND ND ND ND ND ND ND ND

LANGLIER SATURATION INDEX None None -3.6 -3.6 -3.36 -3.36 -3.42 -3.42 -2.99 -2.99 -3.56 -3.56 -3.12 -3.12

SELENIUM 50 ug/l 5.0 ug/l ND ND ND ND ND ND ND ND ND ND ND ND

SILVER 0.1 mg/l 0.01 mg/l ND ND ND ND ND ND ND ND ND ND ND ND

SODIUM **20/270 mg/l 0.2 mg/l 7.0 7.0 13.2 13.2 9.0 9.0 9.4 9.4 9.5 9.5 13.1 13.1

ZINC 5.0 mg/l 0.02 mg/l ND ND ND ND ND ND ND ND ND ND 0.039 0.039

COLOR 15 Units 5 Units ND ND ND ND ND ND ND ND ND ND ND ND

TURBIDITY 5 Units 1 Unit ND ND 2.4 2.4 ND ND ND ND ND ND ND ND

ODOR 3 Units 0 Units ND ND ND ND ND ND ND ND ND ND ND ND

IRON 0.3 mg/l 0.02 mg/l ND ND ***0.448 ***0.448 ND ND ND ND ND ND ND ND

MANGANESE 0.3 mg/l 0.01 mg/l ND ND 0.046 0.046 ND ND ND ND ND ND ND ND

AMMONIA None 0.1 mg/l ND ND ND ND ND ND ND ND ND ND ND ND

NITRITE 1.0 mg/l 0.1 mg/l ND ND ND ND ND ND ND ND ND ND ND ND

NITRATE 10.0 mg/l 0.1 mg/l 2.3(2)

2.3 4.2(4)

/3.8(4)

4.0/3.7 3.4(2)

3.4 3.4(2)

3.4 5.6(8)

4.5 4.3(2)

4.3

CHLORIDE 250 mg/l 1.0 mg/l 8.0 8.0 26.9 26.9 11.0 11.0 11.7 11.7 11.7 11.7 31.5(4)

26.6

TOTAL HARDNESS None 1.0 mg/l 30.4 30.4 58.4 58.4 40.9 40.9 50.6 50.6 58.0 58.0 80.4 80.4

TOTAL ALKALINITY None 0 mg/l 15.1 15.1 30.0 30.0 16.6 16.6 29.6 29.6 21.8 21.8 28.7 28.7

pH (BEFORE TREATMENT) None None 5.5 5.5 6.5(2)

6.2 6.5(2)

6.3 6.1(2)

6.1 6.5(2)

6.1 5.5 5.5

CALCIUM HARDNESS None 1.0 mg/l 18.0 18.0 35.5 35.5 24.9 24.9 30.2 30.2 35.5 35.5 47.4 47.4

TOTAL DISSOLVED SOLIDS None 5.0 mg/l 69.0 69.0 130.0 130.0 97.0 97.0 101.0 101.0 119.0 119.0 166.0 166.0

DETERGENTS (MBAS) None 0.08 mg/l ND ND ND ND ND ND ND ND ND ND ND ND

SULFATE 250 mg/l 5.0 mg/l 10.0 10.0 22.2 22.2 11.1 11.1 12.9 12.9 24.9 24.9 34.2 34.2

FREE CYANIDE 200 ug/l 10.0 ug/l ND ND ND ND ND ND ND ND ND ND ND ND

ANTIMONY 6.0 ug/l 5.9 ug/l ND ND ND ND ND ND ND ND ND ND ND ND

BERYLLIUM 4.0 ug/l 3.0 ug/l ND ND ND ND ND ND ND ND ND ND ND ND

CALCIUM None 1.0 mg/l 7.2 7.2 14.2 14.2 10.0 10.0 12.1 12.1 14.2 14.2 19.0 19.0

MAGNESIUM None 1.0 mg/l 3.0 3.0 5.6 5.6 3.9 3.9 5.0 5.0 5.5 5.5 8.0 8.0

NICKEL 0.1 mg/l 0.0005 mg/l ND ND 0.00084 0.00084 0.0013 0.0013 ND ND ND ND 0.0011 0.0011

THALLIUM 2.0 ug/l 0.3 ug/l ND ND ND ND ND ND ND ND ND ND ND ND

PERCHLORATE 18 ug/l 1.0 ug/l ND ND ND ND ND ND ND ND 10.4(3)

5.5 ND ND

CONT. - CONTAMINANT

ND - NOT DETECTED

NA - NOT ANALYZED

** - 20 mg/l IS THE LIMIT FOR PEOPLE ON HIGHLY RESTRICTED SODIUM DIETS AND 270 mg/l FOR THOSE ON MODERATELY RESTRICTED SODIUM DIETS

[ ] - USEPA/NYSDH ACTION LEVEL( )

- NUMBER OF SAMPLES COLLECTED AND TESTED DURING THE YEAR


WELL NO. 9 N-014223(1)

WELL NO. 8 N-07665(1)

WELL NO. 4 N-00118(1)

WELL NO. 5 N-00119(3)

WELL NO. 6 N-01651(1)

WELL NO. 7 N-05152(1)



MAX.


PARAMETERS (ug/l) LEVEL LIMITS RESULT RESULT RESULT RESULT RESULT RESULT RESULT RESULT RESULT RESULT RESULT RESULT

SYNTHETIC ORGANICS CONTAMINANTS

(SOC)

LINDANE 0.2 ug/l 0.025 ug/l ND ND ND ND ND ND ND ND ND ND ND ND

HEPTACHLOR 0.4 ug/l 0.025 ug/l ND ND ND ND ND ND ND ND ND ND ND ND

ALDRIN 5.0 ug/l 0.025 ug/l ND ND ND ND ND ND ND ND ND ND ND ND

HEPTACHLOR EPOXIDE 0.2 ug/l 0.025 ug/l ND ND ND ND ND ND ND ND ND ND ND ND

DIELDRIN 2.0 ug/l 0.05 ug/l ND ND ND ND ND ND ND ND ND ND ND ND

ENDRIN 2.0 ug/l 0.05 ug/l ND ND ND ND ND ND ND ND ND ND ND ND

METHOXYCHLOR 40.0 ug/l 0.25 ug/l ND ND ND ND ND ND ND ND ND ND ND ND

TOXAPHENE 3.0 ug/l 2.5 ug/l ND ND ND ND ND ND ND ND ND ND ND ND

CHLORDANE 2.0 ug/l 0.5 ug/l ND ND ND ND ND ND ND ND ND ND ND ND

TOTAL PCBs 0.5 ug/l 0.5 ug/l ND ND ND ND ND ND ND ND ND ND ND ND

PROPACHLOR 50.0 ug/l 1.0 ug/l ND ND ND ND ND ND ND ND ND ND ND ND

ALACHLOR 2.0 ug/l 1.0 ug/l ND ND ND ND ND ND ND ND ND ND ND ND

SIMAZINE 4.0 ug/l 0.5 ug/l ND ND ND ND ND ND ND ND ND ND ND ND

ATRAZINE 3.0 ug/l 0.5 ug/l ND ND ND ND ND ND ND ND ND ND ND ND

METOLACHLOR 50.0 ug/l 1.0 ug/l ND ND ND ND ND ND ND ND ND ND ND ND

METRIBUZIN 50.0 ug/l 0.5 ug/l ND ND ND ND ND ND ND ND ND ND ND ND

BUTACHLOR 50.0 ug/l 1.0 ug/l ND ND ND ND ND ND ND ND ND ND ND ND

CONT. - CONTAMINANT

ND - NOT DETECTED

NA - NOT ANALYZED( )


WELL NO. 9 N-014223WELL NO. 4 N-00118 WELL NO. 5 N-00119(1) WELL NO. 8 N-07665WELL NO. 6 N-01651 WELL NO. 7 N-05152



MAX.



SYNTHETIC ORGANICS CONTAMINANTS (SOC)

(CONT'D.)

2,4-D 50.0 ug/l 0.25 ug/l ND ND ND ND ND ND ND ND ND ND ND ND

2,4,5-TP (SILVEX) 10.0 ug/l 0.13 ug/l ND ND ND ND ND ND ND ND ND ND ND ND

DINOSEB 7.0 ug/l 0.2 ug/l ND ND ND ND ND ND ND ND ND ND ND ND

DALAPON 200 ug/l 0.7 ug/l ND ND ND ND ND ND ND ND ND ND ND ND

PICLORAM 500 ug/l 0.6 ug/l ND ND ND ND ND ND ND ND ND ND ND ND

DICAMBA 50.0 ug/l 0.08 ug/l ND ND ND ND ND ND ND ND ND ND ND ND

PENTACHLOROPHENOL 1.0 ug/l 0.2 ug/l ND ND ND ND ND ND ND ND ND ND ND ND

HEXACHLOROCYCLOPENTADIENE 50.0 ug/l 0.64 ug/l ND ND ND ND ND ND ND ND ND ND ND ND

bis(2-ETHYLHEXYL)ADIPATE 400 ug/l 1.0 ug/l ND ND ND ND ND ND ND ND ND ND ND ND

bis(2-ETHYLHEXYL)PHTHALATE 6.0 ug/l 3.0 ug/l ND ND ND ND ND ND ND ND ND ND ND ND

HEXACHLOROBENZENE 1.0 ug/l 0.25 ug/l ND ND ND ND ND ND ND ND ND ND ND ND

BENZO(A)PYRENE 0.2 ug/l 0.1 ug/l ND ND ND ND ND ND ND ND ND ND ND ND

ALDICARB SULFONE 2.0 ug/l 1.0 ug/l ND ND ND ND ND ND ND ND ND ND ND ND

ALDICARBSULFOXIDE 4.0 ug/l 1.0 ug/l ND ND ND ND ND ND ND ND ND ND ND ND

ALDICARB 3.0 ug/l 1.0 ug/l ND ND ND ND ND ND ND ND ND ND ND ND

TOTAL ALDICARBS 7.0 ug/l 1.0 ug/l ND ND ND ND ND ND ND ND ND ND ND ND

OXAMYL 200 ug/l 1.0 ug/l ND ND ND ND ND ND ND ND ND ND ND ND

METHOMYL 50.0 ug/l 1.0 ug/l ND ND ND ND ND ND ND ND ND ND ND ND

3-HYDROXYCARBOFURAN 50.0 ug/l 1.0 ug/l ND ND ND ND ND ND ND ND ND ND ND ND

CARBOFURAN 40.0 ug/l 1.0 ug/l ND ND ND ND ND ND ND ND ND ND ND ND

CARBARYL 50.0 ug/l 1.0 ug/l ND ND ND ND ND ND ND ND ND ND ND ND

GLYPHOSATE 700 ug/l 10.0 ug/l ND ND ND ND ND ND ND ND ND ND ND ND

DIQUAT 20 ug/l 1.0 ug/l ND ND ND ND ND ND ND ND ND ND ND ND

ENDOTHALL 100 ug/l 50.0 ug/l ND ND ND ND ND ND ND ND ND ND ND ND

1,2-DIBROMOETHANE (EDB) 0.05 ug/l 0.02 ug/l ND ND ND ND ND ND ND ND ND ND ND ND

1,2-DIBROMO-3-CHL.PROPANE 0.2 ug/l 0.02 ug/l ND ND ND ND ND ND ND ND ND ND ND ND

DIOXIN 30 Pg/L 5.0 Pg/L ND ND ND ND ND ND ND ND ND ND ND ND

CONT. - CONTAMINANT

ND - NOT DETECTED

NA - NOT ANALYZED

Pg/L - PICOGRAMS PER LITER( )


WELL NO. 9 N-014223WELL NO. 4 N-00118 WELL NO. 5 N-00119(1) WELL NO. 8 N-07665WELL NO. 6 N-01651 WELL NO. 7 N-05152



MAX.



CHLOROACETIC ACID --- < 2.0 ug/l NOT TESTED NOT TESTED NOT TESTED NOT TESTED NOT TESTED NOT TESTED

BROMOACETIC ACID --- < 1.0 ug/l NOT TESTED NOT TESTED NOT TESTED NOT TESTED NOT TESTED NOT TESTED

DICHLOROACETIC ACID --- < 1.0 ug/l NOT TESTED NOT TESTED NOT TESTED NOT TESTED NOT TESTED NOT TESTED

TRICHLOROACETIC ACID --- < 1.0 ug/l NOT TESTED NOT TESTED NOT TESTED NOT TESTED NOT TESTED NOT TESTED

DIBROMOACETIC ACID --- < 2.0 ug/l NOT TESTED NOT TESTED NOT TESTED NOT TESTED NOT TESTED NOT TESTED

TOTAL HALOACETIC ACID 60 ug/l < 2.0 ug/l NOT TESTED NOT TESTED NOT TESTED NOT TESTED NOT TESTED NOT TESTED

CHLOROFORM 50 ug/l < 0.5 ug/l ND ND 0.52 0.1 ND ND ND ND ND ND ND ND

BROMODICHLOROMETHANE 50 ug/l < 0.5 ug/l ND ND ND ND ND ND ND ND ND ND ND ND

DIBROMOCHLOROMETHANE 50 ug/l < 0.5 ug/l ND ND ND ND ND ND ND ND ND ND ND ND

BROMOFORM 50 ug/l < 0.5 ug/l ND ND ND ND ND ND ND ND ND ND ND ND

TOTAL TRIHALOMETHANES 80 ug/l < 1.0 ug/l ND ND 0.5 0.1 ND ND ND ND ND ND ND ND

RADIONUCLIDES

GROSS ALPHA 15 pCi/L < 3 pCi/L NOT TESTED 3.0 3.0 NOT TESTED NOT TESTED NOT TESTED NOT TESTED

GROSS BETA 50 pCi/L < 3 pCi/L NOT TESTED 4.0 4.0 NOT TESTED NOT TESTED NOT TESTED NOT TESTED

RADIUM 226 & 228 5 pCi/L < 3 pCi/L NOT TESTED ND ND NOT TESTED NOT TESTED NOT TESTED NOT TESTED

TOTAL URANIUM 30 ug/l < 3.0 ug/l NOT TESTED ND ND NOT TESTED NOT TESTED NOT TESTED NOT TESTED

CONT. - CONTAMINANT

ND - NOT DETECTED

NA - NOT ANALYZED

pCi/L - pico Curies per liter( )


WELL NO. 9 N-014223(4)

TRIHALOMETHANES AND HALOACETIC ACIDS

WELL NO. 8 N-07665(4)

WELL NO. 4 N-00118(4)

WELL NO. 5 N-00119(6)

WELL NO. 6 N-01651(5)

WELL NO. 7 N-05152(4)



MAX.



1,4 DIOXANE 50 ug/l 0.7 ug/l 0.091 0.091 0.33 0.33 0.26 0.26 0.13 0.13 ND ND 0.10 0.10

VOLATILES

1,1-DICHLOROETHANE 5.0 ug/l 0.03 ug/l ND ND ND ND 0.59(5)

0.32 ND ND ND ND ND ND

1,2,3-TRICHLORPROPANE 5.0 ug/l 0.03 ug/l ND ND ND ND ND ND ND ND ND ND ND ND

1,3-BUTADIENE 50 ug/l 0.1 ug/l ND ND ND ND ND ND ND ND ND ND ND ND

BROMOCHLOROMETHANE 50 ug/l 0.06 ug/l ND ND ND ND ND ND ND ND ND ND ND ND

BROMOMETHANE 5.0 ug/l 0.2 ug/l ND ND ND ND ND ND ND ND ND ND ND ND

CHLORODIFLUOROMETHANE 5.0 ug/l 0.08 ug/l ND ND ND ND ND ND ND ND ND ND ND ND

CHLOROMETHANE 5.0 ug/l 0.2 ug/l ND ND ND ND ND ND ND ND ND ND ND ND

PERFLUOROCHEMICALS

PERFLUOROBUTANESULFONIC ACID 50,000 ng/l 900 ng/o ND ND ND ND ND ND ND ND ND ND ND ND

PERFLUOROHEPTANOIC ACID 50,000 ng/l 10 ng/l ND ND ND ND ND ND ND ND ND ND ND ND

PERFLUOROHEXANESULFONIC ACID 50,000 ng/l 30 ng/l ND ND 2.5 2.5 ND ND ND ND ND ND ND ND

PERFLUORONONANOIC ACID 50,000 ng/l 20 ng/l 4.55 4.55 15.3 15.3 ND ND ND ND ND ND ND ND

PERFLUOROOCTANESULFONIC ACID 70 ng/l 40 ng/l ND ND ND ND ND ND ND ND ND ND ND ND

PERFLUOROOCTANOIC ACID 70 ng/l 20 ng/l ND ND ND ND ND ND ND ND 2.9 2.9 ND ND

METALS

CHROMIUM 100 ug/l 0.2 ug/l ND ND ND ND ND ND ND ND ND ND ND ND

COBALT No MCL 1.0 ug/l NOT TESTED NOT TESTED NOT TESTED NOT TESTED NOT TESTED NOT TESTED

MOLYBDENUM No MCL 1.0 ug/l NOT TESTED NOT TESTED NOT TESTED NOT TESTED NOT TESTED NOT TESTED

STRONTIUM No MCL 0.3 ug/l NOT TESTED NOT TESTED NOT TESTED NOT TESTED NOT TESTED NOT TESTED

VANADIUM No MCL 0.2 ug/l NOT TESTED NOT TESTED NOT TESTED NOT TESTED NOT TESTED NOT TESTED

HEXAVELENT CHROMIUM No MCL 0.03 ug/l 0.58 0.58 ND ND 1.6 1.6 1.8 1.8 1.4 1.4 0.46 0.46

CHLORATE No MCL 20 ug/l NOT TESTED NOT TESTED NOT TESTED NOT TESTED NOT TESTED NOT TESTED

HORMONES

17-ALPHA-ETHYNYLESTRADIOL 50 ug/l 0.0004 ug/l NOT TESTED NOT TESTED NOT TESTED NOT TESTED NOT TESTED NOT TESTED

17-BETA-ESTRADIOL 50 ug/l 0.0009 ug/l NOT TESTED NOT TESTED NOT TESTED NOT TESTED NOT TESTED NOT TESTED

4-ANDROSTENE-3,17-DIONE 50 ug/l 0.0003 ug/l NOT TESTED NOT TESTED NOT TESTED NOT TESTED NOT TESTED NOT TESTED

EQUILIN 50 ug/l 0.004 ug/l NOT TESTED NOT TESTED NOT TESTED NOT TESTED NOT TESTED NOT TESTED

ESTRIOL 50 ug/l 0.0008 ug/l NOT TESTED NOT TESTED NOT TESTED NOT TESTED NOT TESTED NOT TESTED

ESTRONE 50 ug/l 0.002 ug/l NOT TESTED NOT TESTED NOT TESTED NOT TESTED NOT TESTED NOT TESTED

TESTOSTERONE 50 ug/l 0.0001 ug/l NOT TESTED NOT TESTED NOT TESTED NOT TESTED NOT TESTED NOT TESTED

CONT. - CONTAMINANT

ND - NOT DETECTED

Pg/L - PICOGRAMS PER LITER

WELL NO. 5 - OUT OF SERVICE( )


WELL NO. 9 N-014223(1)

UCMR3

WELL NO. 4 N-00118(1)

WELL NO. 5 N-00119(1)

WELL NO. 6 N-01651(1)

WELL NO. 7 N-05152(1)

WELL NO. 8 N-07665(1)



MAX.




VOLATILE ORGANICS

DICHLORODIFLUOROMETHANE 5.0 ug/l 0.5 ug/l ND ND 0.66/ND 0.1/ND ND ND ND ND ND ND ND ND

CHLOROMETHANE 5.0 ug/l 0.5 ug/l ND ND ND ND ND ND ND ND ND ND ND ND

VINYL CHLORIDE 2.0 ug/l 0.5 ug/l ND ND ND ND ND ND ND ND ND ND ND ND

BROMOMETHANE 5.0 ug/l 0.5 ug/l ND ND ND ND ND ND ND ND ND ND ND ND

CHLOROETHANE 5.0 ug/l 0.5 ug/l ND ND ND ND ND ND ND ND ND ND ND ND

TRICHLOROFLUOROMETHANE 5.0 ug/l 0.5 ug/l ND ND ND ND ND ND ND ND ND ND ND ND

1,1-DICHLOROETHENE 5.0 ug/l 0.5 ug/l ND ND ND ND ND ND ND ND ND ND ND ND

METHYLENE CHLORIDE 5.0 ug/l 0.5 ug/l ND ND ND ND ND ND ND ND ND ND ND ND

TRANS-1,2-DICHLOROETHENE 5.0 ug/l 0.5 ug/l ND ND ND ND ND ND ND ND ND ND ND ND

1,1-DICHLOROETHANE 5.0 ug/l 0.5 ug/l ND ND ND ND 0.59 0.32 ND ND ND ND ND ND

cis -1,2 DICHLOROETHENE 5.0 ug/l 0.5 ug/l ND ND 3.4/ND 2.2/ND 0.82 0.76 ND ND ND ND ND ND

2,2-DICHLOROPROPANE 5.0 ug/l 0.5 ug/l ND ND ND ND ND ND ND ND ND ND ND ND

BROMOCHLOROMETHANE 5.0 ug/l 0.5 ug/l ND ND ND ND ND ND ND ND ND ND ND ND

1,1,1-TRICHLOROETHANE 5.0 ug/l 0.5 ug/l ND ND ND ND ND ND ND ND ND ND ND ND

CARBON TETRACHLORIDE 5.0 ug/l 0.5 ug/l ND ND ND ND ND ND ND ND ND ND ND ND

1,1-DICHLOROPROPENE 5.0 ug/l 0.5 ug/l ND ND ND ND ND ND ND ND ND ND ND ND

1,2-DICHLOROETHANE 5.0 ug/l 0.5 ug/l ND ND ND ND ND ND ND ND ND ND ND ND

TRICHLOROETHENE 5.0 ug/l 0.5 ug/l ND ND 1.5/ND 3.5/ND 0.8 0.7 ND ND ND ND ND ND


DIBROMOMETHANE 5.0 ug/l 0.5 ug/l ND ND ND ND ND ND ND ND ND ND ND ND

TRANS-1,3-DICHLOROPROPENE 5.0 ug/l 0.5 ug/l ND ND ND ND ND ND ND ND ND ND ND ND

cis -1,3-DICHLOROPROPENE 5.0 ug/l 0.5 ug/l ND ND ND ND ND ND ND ND ND ND ND ND

1,1,2-TRICHLOROETHANE 5.0 ug/l 0.5 ug/l ND ND ND ND ND ND ND ND ND ND ND ND

TETRACHLOROETHENE 5.0 ug/l 0.5 ug/l ND ND 4.4/ND 1.0/ND 2.4 2.0 ND ND ND ND ND ND

CONT. - CONTAMINANT

ND - NOT DETECTED



WELL NO. 9 N-014223(4)

WELL NO. 4 N-00118(4)

WELL NO. 5 N-00119(6)

WELL NO. 6 N-01651(5)

WELL NO. 7 N-05152(4)

WELL NO. 8 N-07665(4)



MAX.




VOLATILE ORGANICS (CONT'D.)


CHLOROBENZENE 5.0 ug/l 0.5 ug/l ND ND ND ND ND ND ND ND ND ND ND ND

1,1,1,2-TETRACHLOROETHANE 5.0 ug/l 0.5 ug/l ND ND ND ND ND ND ND ND ND ND ND ND

BROMOBENZENE 5.0 ug/l 0.5 ug/l ND ND ND ND ND ND ND ND ND ND ND ND

1,1,2,2-TETRACHLOROETHANE 5.0 ug/l 0.5 ug/l ND ND ND ND ND ND ND ND ND ND ND ND

1,2,3-TRICHLOROPROPANE 5.0 ug/l 0.5 ug/l ND ND ND ND ND ND ND ND ND ND ND ND

2-CHLOROTOLUENE 5.0 ug/l 0.5 ug/l ND ND ND ND ND ND ND ND ND ND ND ND

4-CHLOROTOLUENE 5.0 ug/l 0.5 ug/l ND ND ND ND ND ND ND ND ND ND ND ND

1,2-DICHLOROBENZENE 5.0 ug/l 0.5 ug/l ND ND ND ND ND ND ND ND ND ND ND ND



1,2,4-TRICHLOROBENZENE 5.0 ug/l 0.5 ug/l ND ND ND ND ND ND ND ND ND ND ND ND

HEXACHLOROBUTADIENE 5.0 ug/l 0.5 ug/l ND ND ND ND ND ND ND ND ND ND ND ND

1,2,3-TRICHLOROBENZENE 5.0 ug/l 0.5 ug/l ND ND ND ND ND ND ND ND ND ND ND ND

BENZENE 5.0 ug/l 0.5 ug/l ND ND ND ND ND ND ND ND ND ND ND ND

TOLUENE 5.0 ug/l 0.5 ug/l ND ND ND ND ND ND ND ND ND ND ND ND

ETHYLBENZENE 5.0 ug/l 0.5 ug/l ND ND ND ND ND ND ND ND ND ND ND ND

M,P-XYLENE 5.0 ug/l 0.5 ug/l ND ND ND ND ND ND ND ND ND ND ND ND

O-XYLENE 5.0 ug/l 0.5 ug/l ND ND ND ND ND ND ND ND ND ND ND ND

STYRENE 5.0 ug/l 0.5 ug/l ND ND ND ND ND ND ND ND ND ND ND ND

ISOPROPYLBENZENE (CUMENE) 5.0 ug/l 0.5 ug/l ND ND ND ND ND ND ND ND ND ND ND ND

N-PROPYLBENZENE 5.0 ug/l 0.5 ug/l ND ND ND ND ND ND ND ND ND ND ND ND

1,3,5-TRIMETHYLBENZENE 5.0 ug/l 0.5 ug/l ND ND ND ND ND ND ND ND ND ND ND ND

CONT. - CONTAMINANT

ND - NOT DETECTED



WELL NO. 9 N-014223(4)

WELL NO. 8 N-07665(4)

WELL NO. 7 N-05152(4)

WELL NO. 4 N-00118(4)

WELL NO. 5 N-00119(6)

WELL NO. 6 N-01651(5)



MAX.




VOLATILE ORGANICS (CONT'D.)

TERT-BUTYLBENZENE 5.0 ug/l 0.5 ug/l ND ND ND ND ND ND ND ND ND ND ND ND

1,2,4-TRIMETHYLBENZENE 5.0 ug/l 0.5 ug/l ND ND ND ND ND ND ND ND ND ND ND ND

SEC-BUTYLBENZENE 5.0 ug/l 0.5 ug/l ND ND ND ND ND ND ND ND ND ND ND ND

4-ISOPROPYLTOLUENE (P-CUMENE) 5.0 ug/l 0.5 ug/l ND ND ND ND ND ND ND ND ND ND ND ND

N-BUTYLBENZENE 5.0 ug/l 0.5 ug/l ND ND ND ND ND ND ND ND ND ND ND ND

METHYL TERT.BUTYL ETHER (MTBE) 10.0 ug/l 0.5 ug/l ND ND ND ND ND ND ND ND ND ND ND ND

CONT. - CONTAMINANT

ND - NOT DETECTED



WELL NO. 9 N-014223(4)

WELL NO. 8 N-07665(4)

WELL NO. 7 N-05152(4)

WELL NO. 4 N-00118(4)

WELL NO. 5 N-00119(6)

WELL NO. 6 N-01651(5)

public notice 2019 annual water quality report · 2020. 6. 10. · water act regulations, the...

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